Two state health departments have issued new guidance on testing for the bird flu, following a CDC advisory, even as it says the risk to the public remains low.

San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

The discovery of bird flu in the San Mateo backyard flock prompted health officials to remind people to take biosecurity ...

Chickens and turkeys at commercial poultry operations likely became infected with bird flu through contact with migrating ...

By 1957, scientists had a significantly more sophisticated understanding of influenza, worrying them that a pandemic similar ...

While it's tragic and alarming to see a massive die-off, it's not uncommon for birds that travel in such large populations.

New York Gov. Kathy Hochul announced the state is temporarily shutting down all live bird markets in New York City and ...

New York has ordered a weeklong shutdown of all live bird markets in New York City, Westchester and Long Island after seven ...

A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture announced Wednesday.

While the risk to humans of exposure from cows or milk remains low, this new flu spillover from birds into cows raises the need for continued surveillance.

Among several more outbreaks on commercial farms, one was at a layer facility in Pennsylvania that has nearly 2 million birds ...

Pennsylvania's first confirmed case of avian flu in 2025 in domestic poultry was reported in a 50,000-bird flock on a Lehigh ...